Manually actuated fluid flow control valve
作者： Gerald Herald Morton , John Frederick Gardner
DOI:
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摘要: A manually actuated fluid flow control valve assembly (20) has an associated support structure (24) and a operated handle (32) operatively connected to closure device (27) for the is movable between open closed position thereof which define corresponding positions of wherein releasable means (35) includes automatic lock (36) automatically locking once are in position. The may have weakened portion (102) assures easy shearing under certain conditions.
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